Muffler for explosive-engines.



Patented Aug. 31, 1909. Y

, DI: WANB-B. SMITH.' MUEFLER VIRJ EVXPLOSIVE ENGINES.

APPLIOATION FILEDI .TULY27. 1907.y

WITNESSES t ,t i' I'DEW'ANE B. snrrn,V or DEERFIELD; NEW romm-4 Y y L MUFFLQEFOR EXPLosrvE-ENGINES.

*Specificationof Letters Patent. .PatOIllCd Allg. 31, 1909.

' Application filed July 27, 1907. Serial No. 385,784.

T 0 all. 127mm it may concern.:

thin walls diverging in the mesial plane and lle itknown thatI, DnwANi-z B. SMITH, of converging laterally tov provide a thin wide 55 Deerfield. in the 'county of Oneidal and State ot' New York, ha \'e invented certain new and useful .Improvements in Mutilers\ for Exploslve-lhignws; and I do hereby declare that; the lollmvmg isa full, clcaix and exact description tl|ereot,which willenable others v "fthe head 3 and axially located 1n Athe body `skilled in the art to Awhich itappcrtains toI lnakei and use the same. reference being had to theaccompanying lrawings, and to the etait-aciers of reference marked thereon, which 'form part ofthis specilication. The object oi my present invention is to provide an improved mutller `for explosive engines, which is simple, in construction, eflieient in operation and not. liable to become choked or be damaged by what, is generally termed back lire.

Figure 1 shows a perspective View of a mutller of my present improved construction.

Fig. 2 shows a longitudinal section of the same. Fig-3 shows a cross section taken on line A-B of Fig. 2. i

Referring to the reference `-letters and Afigures in a morev particular description, 1

indicates the outer shell of the bod portion of the nmtller, which is preferably of a cylindrical form and providedwith heads 2 and 3. 'lhe'cylinder is subdivided into inlet. and outlet portions by a transverse partition t, 4preferably located somewhat nearer I 'i will be vprovided with. a, central ekhaust the exhaust end than 'the inlet end of the mulller, In order to locate said partition-4, the4 shell 1 `is provided Vwith an ifnternal encircling rib a against which the. artit-ion 4 finds bearing. The shell 1 on eit er'side of the partition t is lined with an asbestos packing b and an inner-metal lining c more-particularly useful 'for holding the asbestos lining 'zin' place, 11d the lining Ic with the lining gb are'pre .e1-ably secured to the shell by V rivets d. y 1

The heads `2,:1nd 3 are each'flanged as indicated at c to receive the endsotil the cylindrical body, and the heads arefseeured by three longitudinal bolts 5.' The head `2 is provided with an inlet opening at 6 tofwhich may be lcoupledthe'pipe 7 which connects the' mufiler "with the'V engilie.;` `The head 3 openinff 8 to which will be attached"I tlierfan tail exhaust nozzle 9, consisting ofrather .torated, 4inner cylinder l1.

-ing S. The main partition l is provided with a comparatively large central opening 4'1. Extending between the partition l and portion of the muffler is; a numerous] per- This cy inder incloses the opening LJfat one end andthe exhaust opening 8 atgthe other, and is held in its axial locationbyft-be rods 5, o. This inner cylinder 11 is also clamped between the wall fl on the one hand and the head 3 on the other. It is also provided with a middle partition 11%, which is retained against. lateral movement in the cylinder by an'internal rib l1".

In operation the exhaust entering through the'opening has` an opportunity to expand* in the relatively large inlet chamber M, from whence thc gases pass through the openingl l into the first' chamber M of the inner cylinder 11. Thence they pass radially'1 throu rh.

'the perforation into the ciicircling chamber chambers in and passages through this muf' flerare such as not to become readily choked, nor 1s the nulier liable t0 sonic danger by the heat from the exhaustI or from "back ,ln case the pres/85 tringi1ar other words, explosions taking place in the muffler. The muffler is very eas- 1l made and assembled and is also capable o? being taken down and ie-assembledwith facility. y simply removing the nuts from the rods` or bolts 5. l Y What I claim las new and desire to secure by Letters Patent is: u

Amutller' consistingr of a-cylinder and heads having inletand .outlet openings re- I spectively and subdivided by a. main, trans- Verse, centrally, perforated partit-ion into inlet and-outlet chambers, a; fully perforated cylinder of relzit'ively small diameter'lmving In witnesggwliereo have aiijxe'd m "sigl-l a middle. impei'forated partition arranged nature, -in presence of, two Witnessesfthis 23d longitudinally of and substantially axially day of July907 in the outlet chamber-and registering t the D*EYVANE,BLSM'ITL` .4 5 ends with said openingxjthe main partition e Witnesses: e ,A

'and with the exhaustxpexiingin the head, SARAH E.v CLARK,

'substantially-:is set forth. Y DumasA H. M Enwm. 

